Grade 1 - Number Sense and Numeration
Standard 1.NSN.3 - Complete the addition sentence by filling in the missing number with sums up to 20.
Included Skills: Addition
Operational Sense • solve a variety of problems involving the addition and subtraction of whole numbers to 20, using concrete materials and drawings (e.g., pictures, number lines) (Sample problem: Miguel has 12 cookies. Seven cookies are chocolate. Use counters to determine how many cookies are not chocolate.); • solve problems involving the addition and subtraction of single-digit whole numbers, using a variety of mental strategies (e.g., one more than, one less than, counting on, counting back, doubles); • add and subtract money amounts to 10�, using coin manipulatives and drawings.